Setting up anon-base-files (3:4.4-1) ... Configuration file '/etc/machine-id' ==> File on system created by you or by a script. ==> File also in package provided by package maintainer. What would you like to do about it ? Your options are: Y or I : install the package maintainer's version N or O : keep your currently-installed version D : show the differences between the versions Z : start a shell to examine the situation The default action is to keep your current version.
Doing an update today, and first it asked what language to use, I choose US english. Then a bit later it asked about what to do about /etc/machine-id . Choices included ‘keep existing’ and ‘use the one provided in the package’ ( wording may have been slightly different ). It let me see the existing machine-id and it was different than the packaged one.
Q: Was this an expected question to be seen during an update ? If so, how is a user supposed to know the safe response?